static struct mdfour *m;
-static uint32 F(uint32 X, uint32 Y, uint32 Z)
-{
- return (X&Y) | ((~X)&Z);
-}
-
-static uint32 G(uint32 X, uint32 Y, uint32 Z)
-{
- return (X&Y) | (X&Z) | (Y&Z);
-}
+#define MASK32 (0xffffffff)
-static uint32 H(uint32 X, uint32 Y, uint32 Z)
-{
- return X^Y^Z;
-}
-
-static uint32 lshift(uint32 x, int s)
-{
- x &= 0xFFFFFFFF;
- return ((x<<s)&0xFFFFFFFF) | (x>>(32-s));
-}
+#define F(X,Y,Z) ((((X)&(Y)) | ((~(X))&(Z))))
+#define G(X,Y,Z) ((((X)&(Y)) | ((X)&(Z)) | ((Y)&(Z))))
+#define H(X,Y,Z) (((X)^(Y)^(Z)))
+#define lshift(x,s) (((((x)<<(s))&MASK32) | (((x)>>(32-(s)))&MASK32)))
-#define ROUND1(a,b,c,d,k,s) a = lshift(a + F(b,c,d) + X[k], s)
-#define ROUND2(a,b,c,d,k,s) a = lshift(a + G(b,c,d) + X[k] + (uint32)0x5A827999,s)
-#define ROUND3(a,b,c,d,k,s) a = lshift(a + H(b,c,d) + X[k] + (uint32)0x6ED9EBA1,s)
+#define ROUND1(a,b,c,d,k,s) a = lshift((a + F(b,c,d) + M[k])&MASK32, s)
+#define ROUND2(a,b,c,d,k,s) a = lshift((a + G(b,c,d) + M[k] + 0x5A827999)&MASK32,s)
+#define ROUND3(a,b,c,d,k,s) a = lshift((a + H(b,c,d) + M[k] + 0x6ED9EBA1)&MASK32,s)
/* this applies md4 to 64 byte chunks */
static void mdfour64(uint32 *M)
{
- int j;
uint32 AA, BB, CC, DD;
- uint32 X[16];
uint32 A,B,C,D;
- for (j=0;j<16;j++)
- X[j] = M[j];
-
A = m->A; B = m->B; C = m->C; D = m->D;
AA = A; BB = B; CC = C; DD = D;
ROUND1(A,B,C,D, 12, 3); ROUND1(D,A,B,C, 13, 7);
ROUND1(C,D,A,B, 14, 11); ROUND1(B,C,D,A, 15, 19);
+
ROUND2(A,B,C,D, 0, 3); ROUND2(D,A,B,C, 4, 5);
ROUND2(C,D,A,B, 8, 9); ROUND2(B,C,D,A, 12, 13);
ROUND2(A,B,C,D, 1, 3); ROUND2(D,A,B,C, 5, 5);
ROUND3(A,B,C,D, 3, 3); ROUND3(D,A,B,C, 11, 9);
ROUND3(C,D,A,B, 7, 11); ROUND3(B,C,D,A, 15, 15);
- A += AA; B += BB; C += CC; D += DD;
+ A += AA; B += BB;
+ C += CC; D += DD;
- A &= 0xFFFFFFFF; B &= 0xFFFFFFFF;
- C &= 0xFFFFFFFF; D &= 0xFFFFFFFF;
-
- for (j=0;j<16;j++)
- X[j] = 0;
+ A &= MASK32; B &= MASK32;
+ C &= MASK32; D &= MASK32;
m->A = A; m->B = B; m->C = C; m->D = D;
}
copy64(M, buf+64);
mdfour64(M);
}
-
- memset(buf, 0, 128);
- copy64(M, buf);
}
void mdfour_update(struct mdfour *md, unsigned char *in, int n)
{
int fd, i;
struct mdfour md;
- unsigned char buf[64], sum[16];
-
+ unsigned char buf[64*1024], sum[16];
+
fd = open(fname,O_RDONLY);
if (fd == -1) {
perror("fname");
printf("\n");
}
+#if 0
#include "../md4.h"
static void file_checksum2(char *fname)
printf("%02X", sum[i]);
printf("\n");
}
+#endif
int main(int argc, char *argv[])
{
file_checksum1(argv[1]);
+#if 0
file_checksum2(argv[1]);
+#endif
return 0;
}
#endif